A 465-g mass is attached to an ideal massless spring with a spring constant 24.5 N/m. A physics student pulls the mass and stretches the spring by 4.8 cm. At t = 0 the student lets the mass go. Find the position of the mass at t = 13 s. Neglect the friction.

The correct option is "Gravity is an acceleration of about 10 m/s/s that acts downward on a freefalling object"

Explanation:

Gravity can be described as a force of attraction between two bodies or a force that planetary bodies use to pull objects towards themselves. The latter description is the one been tested in the question.

The acceleration due to gravity on earth is 9 m/s² which is the same as 9 m/s/s. Because gravity is a force of attraction, hence it can only be said to act downward on a free-falling object and NOT upwards (as that would no longer be attraction but repulsion).